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What is one over-arching strategy we can use for all four operations? 

✔ See Examples.  View the OVER strategy in addition, subtraction, multiplication, and division operations. 

✔ Multiple Models.  Use open number lines and open arrays to visually communicate the OVER concept.

Efficient Strategy.  For certain problems, it is just so efficient and accessible.

What is one over-arching strategy we can use for all four operations? 

✔ See Examples.  

View the OVER strategy in addition, subtraction, multiplication, and division operations. 

✔ Multiple Models.  

Use open number lines and open arrays to visually communicate the OVER concept.

Efficient Strategy.  

For certain problems, it is just so efficient and accessible.

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